21512127

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{11257}}^1$

素因数の和:11287

約数の個数: 24

約数和(自身を含む): 35935536

約数和(自身を除く): 14423409

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 11257, 33771, 78799, 146341, 236397, 439023, 551593, 1024387, 1654779, 3073161, 7170709, 21512127]

約数ペア:

[(1, 21512127), (3, 7170709), (7, 3073161), (13, 1654779), (21, 1024387), (39, 551593), (49, 439023), (91, 236397), (147, 146341), (273, 78799), (637, 33771), (1911, 11257)]